1-HydroxyIbuprofen is a metabolite of Ibuprofen in P. australis[1]. Ibuprofen is an anti-inflammatory inhibitor targeting COX-1 and COX-2 with IC50s of 13 μM and 370 μM, respectively[1]. [1]. Yujie He, et al. Metabolism of Ibuprofen by Phragmites australis: Uptake and Phytodegradation. Environ Sci Technol. 2017 Apr 18;51(8):4576-4584. [2]. Noreen Y, et al. Development of a radiochemical cyclooxygenase-1 and -2 in vitro assay for identification of natural products as inhibitors of prostaglandin biosynthesis. J Nat Prod. 1998 Jan;61(1):2-7.